Basic anti vibration? Cones vs pods? Is there "good enough solution"?

@bkeske - you wrote

As my cones have, essentially, a small steel ball contact point

Are they are like the Vibrapod?
http://vibrapod.com/vibrapodcone.htm

You should be able to improve things with a ceramic tile with a layer of this foam between the shelf and the tile...
https://www.duckbrand.com/products/shelf-liner-bath/non-adhesive-shelf-liner

Granite is getter because of the higher mass

The key to controlling vibrations in a shelf is to make a sandwich of materials having very different densities. But for the foam layer - thinner is often better.

Sorbothane is commonly used, but too much can muddy the details. I use the 1/10" thick sorbothane to dampen between the shelf and the supporting struts of my steel rack.

Before moving to the more expensive Bronze/Brass cones I tried hardwood cones and they were surprisingly good, which then tempted me to try the Brass cones.

The bronze/brass cones I had made by a guy in the area that turns bearings and bushings. I had five sets of three made in different size=s for around $200

Regards - Steve

@williewonka

Are they are like the Vibrapod?

Yes, they are the Vibrapod *cones* As you linked to, not the origional ‘disc shape’ Viprapod. I’m using the cones alone, which Vibrapod states you can on their web site.

I just used the tile as a I had some on hand. As I’m in the design/build biz, I’m sure I can probably find a scrap piece of granite at some point, or buy a slab, or tiles. Actually, granite tiles are pretty cheap at Home Depot.

Everything is different....you have to experiment to find out what you like. I’m using brass cones....I have used steel, aluminum, some kind of plastic, etc., etc. All different

Burner, The best way to deal with this problem is to suspend your equipment rack from the ceiling with springs tuned to 2 Hz. Dampen the motion with motorcycle shocks. You can dress up the entire affair by making linen sock covers. This is not my idea. It is Edgar Villchur's

+1 what @stringreen said - I tried steel, glass, wood and Brass/Bronze on my granite tiles.

Steel and glass sounded a little "brittle" and "harsh"

Wood was a little "mellow" compared to the Bonze/Brass, but much better than the Steel and glass

The Bronze/Brass cones provided the best sound for my system 
- more dynamic with improved details and clarity over the wood
Hope that helps - Steve